review updates

.github/workflows/e2e-cache.yml

@@ -134,3 +134,78 @@ jobs:
       - name: Verify node and yarn
         run: __tests__/verify-node.sh "${{ matrix.node-version }}"
         shell: bash
+
+  yarn-subprojects:
+    name: Test yarn subprojects
+    strategy:
+      matrix:
+        node-version: [12, 14, 16]
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: prepare sub-projects
+        env:
+          YARN_ENABLE_IMMUTABLE_INSTALLS: false
+        run: |
+          rm package.json
+          rm package-lock.json
+          echo "create yarn2 project in the sub2"
+          mkdir sub2
+          cd sub2
+          cat <<EOT >package.json
+          {
+            "name": "subproject",
+            "dependencies": {
+              "random": "^3.0.6",
+              "uuid": "^9.0.0"
+            }
+          }
+          EOT
+          yarn set version 2.4.3
+          yarn install
+
+          echo "create yarn3 project in the sub3"
+          cd ..
+          mkdir sub3
+          cd sub3
+          cat <<EOT >package.json
+          {
+            "name": "subproject",
+            "dependencies": {
+              "random": "^3.0.6",
+              "uuid": "^9.0.0"
+            }
+          }
+          EOT
+          yarn set version 3.5.1
+          yarn install
+
+          echo "create yarn1 project in the root"
+          cd ..
+          cat <<EOT >package.json
+          {
+            "name": "subproject",
+            "dependencies": {
+              "random": "^3.0.6",
+              "uuid": "^9.0.0"
+            }
+          }
+          EOT
+          yarn set version 1.22.19
+          yarn install
+
+      # expect
+      #  - no errors
+      #  - log
+      #    ##[debug]Cache Paths:
+      #    ##[debug]["sub2/.yarn/cache","sub3/.yarn/cache","../../../.cache/yarn/v6"]
+      - name: Setup Node
+        uses: ./
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'yarn'
+          cache-dependency-path: |
+            **/*.lock
+            yarn.lock